As GM Authority has covered at length, General Motors issued a safety recall several months back to address an issue affecting certain models equipped with the naturally aspirated 6.2L V8 L87 gasoline ...

A misfire means that a cylinder in your engine isn’t producing the power it should because the air-fuel mixture in it didn’t properly ignite and burn. It could be an intermittent problem — meaning it ...

Misfiring, rough idling, poor acceleration, and decreased fuel efficiency — the four ominous horsemen of bad spark plugs. Nobody wants to ever get to that point before desperately changing such a ...

General Motors has issued a stop-sale order and a full recall for every full-size pickup and SUV equipped with its 6.2-liter L87 V8 engine produced between 2021 and 2024. This action follows months of ...

I own a 2018 Subaru Outback, 2.5L engine with 48,000 kilometres on it. Subaru recommends changing the spark plugs at 100,00 kilometres or five years, whichever comes first. I can understand specifying ...

Those who felt their Dodge Challenger SRT Demon 170 lost some of the 1,025 horsepower along the way get good news. It turns out they were right: their cars were indeed losing power. Dodge has quietly ...

Spark plugs that haven't been changed for a long time can become one with the cylinder head. Fortunately, it's possible to repair damaged threads instead of scrapping the head. (Photograph by Chris ...

Changing your own spark plugs is a rite of passage among gearheads. It shows you’re fully aware that your car needs basic maintenance to stay in tip-top shape, and that you’re ready to tackle it ...

The voice on the other end of the phone was sullen. It belonged to a friend who had just emerged from under the hood of his 1999 Chevrolet pickup. As he was putting the #4 spark plug back into the ...